Engine Compression
Check compression pressure with engine at normal operating temperature, all spark plugs removed (on dual spark plug, remove exhaust side only), throttle valves wide open and at specified cranking speed. On Pulsar NX SE with Direct Ignition System (DIS), disconnect power transistor harness connector. On other models, disconnect distributor harness connector.
On all models, remove fuel pump fuse before cranking engine. Crank engine at least 6 revolutions to determine engine compression. Compression reading should be as specified. See ENGINE COMPRESSION table.
ENGINE COMPRESSION
| Model | Standard psi (kg/cm2 ) | Minimum psi (kg/cm2 ) | Minimum RPM | ||
|---|---|---|---|---|---|
| Pathfinder & Pickup | 173 (12.2) | 131 (9.2) | 350 | ||
| Pulsar NX SE/XE | 181 (13.0) | 142 (10.0) | 350 | ||
| Sentra | 181 (13.0) | 142 (10.0) | 350 | ||
| Stanza | 171 (12.0) | 128 (9.0) | 350 | ||
| 240SX (1) | 192 (13.5) | 142 (10.0) | 300 | ||
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